W-checker在高性能混凝土质量控制中的应用研究  

Application Research of W-checker for High Performance Concrete Quality Control

作　　者：柴瑞 曾俊杰[2] 刘行[2] 熊建波[2] 

机构地区：[1]港珠澳大桥管理局,广东珠海519015 [2]中交四航工程研究院有限公司,广东广州510230

出　　处：《施工技术》2014年第3期41-44,共4页Construction Technology

基　　金：国家科技支撑计划项目:港珠澳大桥跨海集群工程建设关键技术研究与示范(2011BAG07B04)

摘　　要：水胶比、抗压强度和氯离子扩散系数是高性能混凝土质量控制中的关键因素。采用新拌混凝土单位水量测定仪(W-checker)对不同水胶比新拌高性能混凝土成分进行了测试,通过室内试验建立了混凝土水胶比与抗压强度和氯离子扩散系数之间的关系,并将研究结果应用于实际工程中。结果表明,采用W-checker可准确测试新拌高性能混凝土水胶比,有效预测混凝土28,56d抗压强度和氯离子扩散系数,预测值与实际值相对误差小。Wchecker用于高性能混凝土水胶比、抗压强度和氯离子扩散系数等质量控制时具有良好的可行性。Water binder ratio （w/b）, compressive strength and chloride diffusion coefficient are key factors of high performance concrete quality control. Composition of fresh concrete with different w/b was analyzed with Fresh Concrete Unit Water Content Measuring Apparatus （W-checker） in the paper. Relationships between w/b and compressive strength, w/b and chloride diffusion coefficient were established according to laboratory experiments. Engineering application of the results showed that w/b of high performance concrete could be tested accurately with the use of W-checker. Furthermore, concrete compressive strength and chloride diffusion coefficients at 28d and 56d could be predicted. Relative error analysis revealed that the accuracy of the prediction was satisfied. The application of W-checker for high performance concrete quality control is feasible.

关 键 词：混凝土 单位水量测定仪 水胶比 氯离子扩散系数 抗压强度 质量控制 

分 类 号：TU528.1[建筑科学—建筑技术科学]